class ArticleTagList(models.Model):
	name = models.CharField(max_length=20, blank=True)

class ArticleTag(models.Model):
	tag = models.ForeignKey(ArticleTagList, on_delete=models.CASCADE, blank = False)
	article = models.ForeignKey(Article, on_delete=models.CASCADE, blank = False)

class Article(models.Model):
	user = models.ForeignKey(User, on_delete=models.CASCADE)
	name = models.CharField(max_length=50, blank=False)
	discription = models.CharField(max_length=250, blank=True)
	tags = models.ForeignKey(ArticleTag, on_delete=models.CASCADE, blank = True)